Churchill, Winston S.British politician and author. The eldest son of Randolph Churchill, he was gazetted to the 4th Hussars in 1895, and his army career included fighting at Omdurman with the 1898 Nile Expeditionary Force. During the second Boer War he acted as a London newspaper correspondent. Initially a Conservative MP (1900), he joined the Liberals in 1904, and was Colonial Under-Secretary (1905), President of the Board of Trade (1908), Home Secretary (1910), and First Lord of the Admiralty (1911).